Natural or artificial gemstone



FIG. 1 is a top view of a natural or artificial gemstone according to a first embodiment of the present invention;

FIG. 2 is a right side view of the first embodiment;

FIG. 3 is a bottom view of the first embodiment;

FIG. 4 is a front view of the first embodiment;

FIG. 5 is a rear view of the first embodiment;

FIG. 6 is a perspective view; and,

FIG. 7 is a left side view of the first embodiment. 

The ornamental design for a natural or artificial gemstone, as shown and described. 